Military of China, force comment.
Military of China, force comment.

Data Figure: China’s new generation of conventional submarines, the Navy

Xinhua News Agency, Qingdao, June 17 – problem: he, the submarine put “invisible cloak” – National Science and Technology Progress Award winner in mind, the Navy submarine Professor Da Liang Long

early summer. A submarine and surface ship between the “red and blue” real confrontation exercise at sea began. Ultimately, the “red” side submarine escape anti-submarine forces, directly on the “blue” side implementation of the maritime fleet command center devastating … …

“red” side to win the “hero”, just install boat on the water acoustic environment information and decision support systems. The system not only to the submarine put a “stealth coat”, can also be heard beyond the submarine sonar, the submarine commanders to grasp the fleeting sea battle between the winning opportunities.

acoustic environmental information and decision support systems developer of the Navy Submarine School of acoustic data center director and doctoral tutor Da Liang Professor Lung. In recent years, he is responsible for organizing a number of national scientific and technological progress in scientific research were awarded first and second prizes, access to military science and technology progress awards five, two patents. In 2010, the Central Military Commission as a first Dragon Da Liang.

hard

noise, is the submarine’s fatal weakness. Countries in the world are dedicated to submarine noise reduction noise reduction, so that the submarine is more subtle.

“environmental effects of marine technology”, so that Da Liang Long seen as the submarine noise reduction noise reduction in new ways. In the ocean, different ocean currents, water temperature, salinity, density and other factors, would constitute a different sound field, affecting the sound propagation speed and distance. In some “field”, the sound will decay quickly or refraction, the anti-submarine forces of the sonar system failure.

“If the submarine voyage to find the sound field, it is tantamount to a stealth submarine put on coat, greatly reducing the probability of the submarine was found.” Good inventive, is Da Liang Long strengths.

order to overcome technical difficulties, Da Liang Long almost to the point of obsession. To calculate the underwater structure of three-dimensional sound field, he in the laboratory using 486 computer to calculate a whole winter, New Year’s Eve also keep in the laboratory.

summer vacation that year, Da Liang Long decided to take his wife and daughter to Beijing vacation travel. When the train station travel to Jinan, Da Liang Long suddenly came up with a calculation of the sound field structure to improve the efficiency of the way, told his wife and daughter waiting for him to Beijing, get off on the way back to Qingdao. Write a new program, the stability of the test run, test results … … calculating all the work is complete after 7 days. Da Liang Long came home to find his wife and daughter sat on the sofa in anger, then remember your promise before parting off.

time, Da Liang Long encountered a problem, two weeks later still not found a solution. Weekend, he pulled his wife to attend a friend’s wedding. Holding a cup filled with liquor, Da Liang Long flash: Why in the water the fish can hear the voice of the shore, and people on shore heard the voice of … … underwater wedding just eat half, Da Liang Long found a solution to the problem of new way, got up and said to his wife: “I am a little in advance to go!”

through more than 3,000 days and nights of hard research, Da Liang Long conducted thousands of tests, analysis and calculation of the tens of thousands of sets of data, completion of 10 for propagation and detection of the marine environment model for the submarine to make an important contribution to the concealment.

“Sword”

different sound field, different functions. In some of the sound field, sound is attenuated, absorbed; in some sound field, sound transmission distance and intensity was amplified, can significantly improve the sonar detection range.

in the ocean, submarine sonar like the “ear.” Distinguish type submarine listening to rely on it, to find and identify targets. The role of distance from the sonar, the submarine naval warfare is an important factor in defeating the enemy.

Da Liang Long launched a new “assault.” This is a more difficult area, he not only to face massive daily updated measurement data, but also to capture each of ocean acoustics, information engineering, technology and submarine tactics and equipment systems such as the six problems. Meanwhile, Da Liang Long’s research to be completed by the research team to provide front-line troops to protect the information role of conversion.

unknown future, a huge risk, huge investment in start-up capital as a “bottomless pit.” In the first few years, issues no progress.

“This is a technology development! Are in the forefront of technological change, we do not run to ‘mine system’, that is dereliction of duty!” In the face of pressure, Da Liang Long did not flinch.

Da Liang Long almost glued to riveting in the laboratory, sleepy sleep on the floor for a hungry, he ate some dumplings and eggs. No day and night, no holidays, Da Liang Long life to work in the laboratory, the average less than five hours sleep a day.

overdraft due to prolonged physical, Da Liang Long pale, liver and gastrointestinal dysfunction, and suffering from gout, joint deformity, walking very painful, all year long edge medicine while working.

time, Da Liang Long a number of days feel myself weak pain, head pain, fever subside. And his wife’s repeated urging of aides, before going to hospital. Diagnosed Da Liang Long suffering from encephalitis, he ordered the hospital, and repeatedly told: Do not use the brain, otherwise it will fall serious side-effects.

to Da Liang Long 4 days persist in the hospital. Doctors of Da Liang Long, said: “Do not order it? Why so hard?”

“This is a relationship to the national security of Speed ??race you do not desperately, never less than forward to seize it it means we are today, tomorrow, chosen for their failure and die! “Da Liang Long said.

after 10 years of unremitting struggle, Da Liang Long overcome a series of problems, successfully established China’s first underwater environmental information decision support system, first proposed scale ocean phenomena affect submarine warfare and anti-submarine warfare ideas, and form a series of operational principles to promote the domestic military oceanographic research, enrich the connotation of military oceanography.

Thanksgiving

1994, has just graduated from Master Da Liang Long attended by the Chinese Academy of Sciences, China Shipbuilding Corporation and the Navy three organizations’ country “95″ A key research projects. The major comprehensive survey, focused almost entirely on China’s marine industry sector and the sound of water all the well-known scientists and researchers.

inspection, Da Liang Long shuttle experts, equipment, measurement data between the field and always kept to observe and record. Notes more and more thick, operating more and more skilled, he dark and thin.

end of the inspection task, Da Liang Long regardless of physical fatigue, plunged in the laboratory data processing. Hu Chuan instructors are under the guidance of his team, as representatives from the military to submit a high-quality technical report. Conference experts identified in the report of his naval underwater warfare on the application of the results highly.

growing reputation in the industry of Da Liang Long, eager to dig into the object of many units. They Long to Da Hui high salaries and good jobs.

At that time, Da Liang Long for the treatment to seriously ill older brother, a lot of money owed to relatives and friends. Da Liang Long, or declined a second invitation.

“I left, is to live up to the organization’s culture, the organization is irresponsible!” In 20 years of military service, the DA has always been good to the organization responsible for the dragon in the first place, to give up a lot of envy opportunities.

pursue a Ph.D. degree, is the Da Liang Long years of dreams. In May 1999, Da Liang, Dr. Long prepared to participate in entrance examinations to Harbin. Pro on the front of the plane half an hour, Da Liang Long received the school notice, so he immediately went to Beijing to participate in the project of a research project report. He is not the slightest hesitation, immediately switch to the plane to Beijing.

the next few years, Da Liang Long repeatedly because of research needs and Kao Bo opportunity missed. “I can not because of personal future building needs of affected troops fighting!” Da Liang Long said.

research tasks as heavy, tight, Da Liang Long can not always go home to visit her mother, took her mother over to the resident. Once, when the elderly mother accidentally fell out and was taken to hospital. After waking up from a coma in the mother, anxiously waited at the bedside to see the Da Liang Long, tears.

original, Da Liang Long work every day early, not getting up and left the elderly; work late at night, the mother has long been home asleep. Qingdao able to see that every day, son, mother, only to see his son arrived the day side.

Da Liang dragon to pay, and finally got rewarded. 2009 National Conference on Science and Technology Award awards, Da Liang Long led the research team developed the acoustic environmental decision-making system, won the first prize of scientific and technological progress.

“I am a farmer’s son, did not organize the training and support, how can today’s achievements?!” Da Liang Long said. (Wu Dengfeng, Chen Chao, Liu Jian) ??

(edit: SN049)